#include<bits/stdc++.h>
using namespace std;
int n,a[100005],cnt=1,sum;
int main(){
    freopen("duel.in","r",stdin);
    freopen("duel.out","w",stdout);
    cin>>n;
    for(int i=1;i<=n;i++){
        cin>>a[i];
    }
    sort(a+1,a+n+1);
    for(int i=1;i<=n;i++){
        if(a[i]==a[i-1]){
            cnt++;
            if(sum<cnt){
                sum=cnt;
            }
        }
        else{
            if(sum<cnt){
                sum=cnt;
            }
            cnt=1;
        }
    }
    cout<<sum;
    fclose(stdin);
    fclose(stdout);
    return 0;
}
